The Tunograph is believed to be the first CRT based tuning indicator. It was made by STC under the Micromesh name and then later as a Brimar product.The balloon envelope is 48 mm in diameter, and excluding the B5 base pins is 135 mm tall.Reference: Data-sheet. Type Tunograph was first introduced in 1933. See also 1933 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | a | p | f | f |
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Absolute Maximum Operating Conditions¶
CRT | Vh | Ah | Va |
| 0.5 | 1.0 | 180 |
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Updated August 30, 2018.
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